WoW... what a difference. Was very easy to install with included instructions. Only took me 20 mins or so. i have a high flow filter and aftermarker pipes. Was running so lean i was worried about burning valves. My power feels better throughout the throttle with no popping on decell. My temp dropped 8-11 degrees. Definatly does what its supposed to do. Will buy for every bike i own with aftermarket air or exhaust..... oh an btw Leather up Rocks wth prices and shipping!